Railway-car truck.



PATBNTED MAY 19, 1903.

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APPLICATION FILED DEO. 17| 1902.

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Mor/EQ?? PATENTBD MAY 19, 1903. H. R. KBITHLBY. RAILWAY GAR TRUCK.

APPLICATION FILED DEO. 17, 1902'.

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m? mw kiffer/fyi UNITED STATES Patented May 19, 1903.

HERBERT R. KEITHLEY, OF BUFFALO, NEW YORK.

RAILWAY-CAR TRUCK.

' SPECIFICATION forming part of Letters Patent No. 728,582, dated May19, 1903.

Application filed December 17, 1902. Serial No. 135,485. (No model.)

To @ZZ whom, it may concern:

Be it known that I, HERBERT R. KEITHLEY, a citizen of the UnitedStates,residing at Buffalo, in the county of Erie and State of New York,haveinvented new and useful Improvements in Railway-Oar Trucks, of whichthe following is a specification.

This invention relates more particularly to a railway-car truck of thediamond type; and the object of the invention is to provide atruck-frame built up of commercial rolled shapes which is composed offew parts arranged in a novel manner whereby the maximum strength andrigidity are secured for the weight of metal employed.

In the accompanying drawings, consisting of two sheets, Figure l is aside elevation of a railway-car truck embodying the invention. Fig. 2 isa view thereof one-half in end elevation and one-half in centralvertical section. Fig. 3 is a plan view of the truckframe. Fig. 4: is avertical section showing the spring-stirrup. v

Like letters of reference refer to like parts in the several figures.

The truck-frame is composed of two trussed side frames, which areattached at their opposite ends to the axle-boxes and are rigidlyconnected together between their ends by a transverse transom. Each sideframe is composed of an upper or compression chord A, a lower or tensionchord B, and a bottom tierod C. The lower chord B is formed of anangle-bar arranged with one flange vertical and the other iiangeprojecting laterally from the lower edge of the vertical flange. The endportions of the lower chord are horizontal and rest upon the tops of theaxle-boxes, and the central portion thereof is depressed or bentdownwardly between the axle-boxes, as usual. The upper chord is formedof an angle-bar arranged with one flange vertical and the other flangeprojecting laterally from the lower edge of the vertical flange. The endportions of the vertical flanges of the upper and lower chords standside by side and are rigidly secured together by horizontal rivets o.The end portions of the lateral iianges are superposed, and they areconnected together and the upper and lower chords connected to theaxle-boxes by the usual anchoring bolts D, which extend away from eachother.

.of the transom members.

through the lateral anges of the chords and through the usual bolt-holesprovided on the sides of the axle-boxes. The horizontal rivets c,connecting the Vertical flanges at the ends of the chords, assist theanchoring-bolts in resisting the opposing tension and compressionstresses in the upper and lower chords. The tie-bar C is connected atits opposite ends to the axle-boxes by the anchoring-bolts and isriveted intermediate of its ends to the central portion of the lateraliiange of the lower chord.

The construction of the side frame thus far described is disclosedin'United States Letters Patent No. 705,763, granted to me July 29,1902.

The transverse transom which connects the two side frames together inthe construction shown is formed by separated channel-beams F, arrangedwith their webs vertical and their anges projecting horizontally outwardor The ends of the transom-channels project out between the chords ofthe side frames, constituting the struts for said chords, and rest uponshort horizontal Z-bars G, which are arranged longitudinally on thelower chords of the side frames, with their lower iianges resting on andriveted to the lateral flanges of the chords and their upper iiangesprojecting inward over the vertical flanges of the lower chords. Thetransom-channels are attached to the Z-bars G by rivets passing throughthe lower flanges of the channels and upper iianges of the Z- bars.These Z-bars afford broad ilat bearing-surfaces for the transom-channelsand materially stii'en the horizontal portions of the lower chords ofthe side frames.

H represents a gusset-plate, of which there are two, one arranged ateach side of the truck between the upper chord and the tops The body ormain portion of each gusset-plate is arranged in a substantiallyhorizontal plane and is riveted to the top flanges of the transommembers and to the lateral flange of the upper chord of the adjacentside frame, beneath which ange the gusset-plate extends. In theconstruction shown the gusset-plates are provided with dependingvertical flanges h at their outer edges, which extend parallel with IOOthe side frames substantially in the vertical planes of the outer facesof the side frames.- The gusset-plates are preferably made from ordinaryrolled channel-beams having one flange removed. In heavy trucks theinner flanges of the channel-beams forming the gusset-plates can beretained and when so retained constitute end stops for the truckbolster.The described arrangement and construction of the gusset-plates affordsla very strong and rigid connection between the trangusset-plates beingriveted to the upper chords of the side frames form with said chordscompound sections which have great capacity in resisting lateral.stresses or bending moments in a horizontal direction, due to the sidethrust of the car-body in rounding curves.

I represents sljlpporting-stirrups for the bolster-springs. They are ofsubstantially U shape and are hung between the transomchannels inside ofand adjacent to the side frames. Each stirrup is preferably made from achannel-beam bent intoU shape with its lianges projecting inwardly. Themajor part of the flange at the inner end of the stirrup is sheared off,so that only a narrow dange t' is left, which at the vertical sideportions of the stirrup serves as guide-bearings for the truck-bolsterand holds the latter centrally in the stirrup to` prevent thebolster-rivets from striking the rivets connecting the stirrup to thetransom. Portions 7l' of the flange at the outer edge of the stirrup areretained. These fiange portions project toward each other from upperends of the vertical sides of the stirru'p and serve as stops to limitthe end- Wise movement of the bolster in the truck.

t2 represents a filler plate or block arranged on the horizontal bottomportion of the stirrup between the inwardly-projecting edge flanges t'z".

The bolster J is supported as usual on springs j, arranged in thestirrups beneath the end portions of the bolster. Any form of bolstermaybe employed. That shown in the drawings forms the subject-matter of aseparate application and is not specifically described herein.

I claim as my invention- 1. In a railway-car truck, the combination oftrussed side frames each comprising upper and lower chords formed byflanged bars having their ends rigidly attached to the car-axle boxes,transom members having upper and lower horizontal flanges and havingtheir ends extending between the upper and lower chords of the sideframes, hanged bars sup- *massa ported by the lower chords of the sideframes and which constitute supports for said transom members, andgusset-plates arranged between and rigidly attached to the upper flangesof the transom members and the upper chords of the side frames,substantially as set forth.

2. In a diamond truck, the combination of trussed side frames eachcomprising upper and lower chords formed by angle-bars arranged with oneange extending laterally outward, transverse connecting-channels theends of which extend between the chords of the side frames, a Z-barsupported by the lower chord of each side frame with its lower liangeresting on the lateral flange of the gusset-plates havinginwardly-extending cen-.

tral portions riveted to the upper flanges of the transverse channels,and longitudinal parts riveted to the lateral flanges of the upperchords of the side frames, substantially as set forth.

3. In a diamond77 truck, the combination of trussed side frames eachcomprising upper and lower chords formed by angle-bars, transverseflanged connecting members the ends of which extend between the chordsof the side frames, fianged bars supported by the lower chords of theside frames and which constitute supports for said transverse connectingmembers, lgusset-plates arranged between and rigidly attached to saidtransverse connecting members and said upper chords of the side frames,and U-shaped spring-stirrups arranged between and attached to saidtransverse connecting members, substantially as set forth.

4. The combination of trussed side frames each comprising upper andlower chords formed of bars having horizontal anges, a transomconnecting said side frames, and gusset-plates having substantiallyhorizontal webs secured to said transom and to said horizontal flangesof the upper chords of said side frames and having substantiallyVertical flanges extending parallel with said side frames, substantiallyas set forth.

5. In a railway-car truck, the combination ofA trussed side frames, atransom connecting said side frames and having its top substantially inthe horizontal plane of the lower edges of the central portions of upperchords of the side frames, and flanged gusset-plates secured to saidtransom and to said trussed side frames, substantially as set forth.

6. In a railway-car truck, the combination of trussed side frames, atransom connecting said side frames, and gusset-plates secured to saidtransom and to said side frames and havingsubstantially verticalangesdisposed substantially in the vertical planes of the IOS IIO

IIS

outer faces of the side frames, substantially as set forth.

7. In a railway-car truck, the combination of trussed side frames, atransom connecting said side frames, and gusset-plates secured to saidtransom and to said side frames and having downturned flanges extendingsubstantially parallel with said side frames, substantially as setforth.

8. In a railway-car truck, the combination of trussed side frames, atransom connecting said side frames, and gusset-plates secured to saidtransom and to said side frames and having downturned flanges disposedsubstantiall)7 in the vertical planes of the outer faces of said sideframes, substantiallyr as set forth.

9. A spring-stirrup for railway-car trucks having vertical sidesconnected by a substantially horizontal portion, said horizontal portionhaving upwardly-projecting edge flanges and said sides havinginwardly-projecting edge iianges, substantially as set forth.

10. vIn a diamond truck, the combination of side frames, separatedtransverse connecting members, and substantially U-shapedspring-stirrups arranged between said transverse members and rigidlyattached thereto, each of said stirrups having inwardly-projecting edgeflanges on its bottom and sides, and a ller arranged on the bottombetween said edge anges, substantially as set forth.

11. A spring-stirrup for railway-car trucks having vertical sidesconnected by a substantially horizontal portion, said vertical sideshaving inwardly-projecting iianges at their outer edges which serve asstops for the truckbolster, substantially as set forth.

Witness my hand this 12th day of December, 1902.

' HERBERT R. KEITHLEY.

